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Expanded vtable for methods to determine whether a combinator is ok to use with regular or CF grammars.

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This commit is contained in:
Meredith L. Patterson 2012-12-18 18:10:40 -05:00
parent 8163b3981d
commit 36e1f66de0
25 changed files with 200 additions and 4 deletions
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8
src/parsers/difference.c
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@ -34,8 +34,16 @@ static HParseResult* parse_difference(void *env, HParseState *state) {
}
}
static bool diff_isValidCF(void *env) {
HTwoParsers *tp = (HTwoParsers*)env;
return (tp->p1->vtable->isValidCF(tp->p1->env) &&
tp->p2->vtable->isValidCF(tp->p2->env));
}
static HParserVtable difference_vt = {
.parse = parse_difference,
.isValidRegular = h_false,
.isValidCF = diff_isValidCF,
};
const HParser* h_difference(const HParser* p1, const HParser* p2) {